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Posted to issues@hbase.apache.org by "Wouter Bolsterlee (JIRA)" <ji...@apache.org> on 2013/08/28 22:05:53 UTC
[jira] [Commented] (HBASE-7826) Improve Hbase Thrift v1 to return
results in sorted order
[ https://issues.apache.org/jira/browse/HBASE-7826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752792#comment-13752792 ]
Wouter Bolsterlee commented on HBASE-7826:
------------------------------------------
Is it really safe to convert a previously required field to an optional one? Parsers using the old definition file might unconditionally expect the field when handling input generated using the newer definitions.
> Improve Hbase Thrift v1 to return results in sorted order
> ---------------------------------------------------------
>
> Key: HBASE-7826
> URL: https://issues.apache.org/jira/browse/HBASE-7826
> Project: HBase
> Issue Type: New Feature
> Components: Thrift
> Affects Versions: 0.94.0
> Reporter: Shivendra Pratap Singh
> Assignee: Shivendra Pratap Singh
> Priority: Minor
> Labels: Hbase, Thrift
> Fix For: 0.98.0, 0.95.2, 0.94.11
>
> Attachments: 7826-v6.patch, HBASE-7826-0.94-v7.patch, hbase_7826.patch, hbase_7826.patch, HBASE-7826.patch, hbase_7826_sortcolumnFlag.1.patch, hbase_7826_sortcolumnFlag.2.patch, hbase_7826_sortcolumnFlag.3.patch, hbase_7826_sortcolumnFlag.4.patch, hbase_7826_sortcolumnFlag.5.patch, hbase_7826_sortcolumnFlag.patch, hbase_7826_trunk.patch
>
>
> Hbase natively stores columns sorted based on the column qualifier. A scan is guaranteed to return sorted columns. The Java API works fine but the Thrift API is broken. Hbase uses TreeMap that ensures that sort order is maintained. However Hbase thrift specification uses a simple Map to store the data. A map, since it is unordered doesn't result in columns being returned in a sort order that is consistent with their storage in Hbase.
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